Touchdown Signals

[MJT]

I haven't read all the posts, but my take on the original question is this. On a running play starting inside about the 12 yard line, either wing who actually sees a player in possession of the ball cross the GL should signal. IMO, you do not mirror, you only signal if you see it.

The B can signal in these situations IMO.
1. If it is a running play from around the 13-20 and the runner is past the LOS and the B can easily get to the GL before the runner he can signal.
2. On a pass play where the ball is caught in the EZ, depending where the B is.

The U can signal in these situations.
NEVER!!!!